<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品添加</el-breadcrumb-item>
    </el-breadcrumb>

    <el-card>
      <!--提示-->
      <el-alert title="添加商品信息" type="info" center show-icon :closable="false"></el-alert>

      <el-steps :space="200" :active="activeIndex - 0" finish-status="success" align-center>
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品照片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px" label-position="top">
        <el-tabs tab-position="left" v-model="activeIndex" :before-leave="beforetabLeave" @tab-click="tabClicked">
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_name">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_name">
              <el-input v-model="addForm.goods_weight"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_name">
              <el-input v-model="addForm.goods_number" type="number"></el-input>
            </el-form-item>
            <!--获取商品分类-->
            <el-form-item label="商品分类">
              <el-cascader v-model="addForm.goods_cat" :options="cateList" :props="cascderProps"
                           @change="handleChange"></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <!--商品参数-->
            <el-form-item :label="item.attr_name" v-for="item in manyList" :key="item.attr_id">
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox :label="cb" v-for="(cb,i) in item.attr_vals" :key="i" border size="mini"></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <!--商品属性-->
            <el-form-item :label="item.attr_name" v-for="item in onlyList" :key="item.attr_id">
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品照片" name="3">
            <!--     商品照片         文件上传地址-->
            <el-upload
              :action="uploadActionUrl"
              :headers="headerObj"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              :on-success="handleSuccess"
              list-type="picture">
              <el-button size="small" type="primary">点击上传</el-button>
              <div slot="tip" class="el-upload__tip">只能上传jpg/png文件，且不超过500kb</div>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <!--            商品内容-->
            <!-- Two-way Data-Binding -->
            <quill-editor v-model="addForm.goods_introduce"/>
            <el-button type="primary" class="shopbtn" @click="addShop">添加商品</el-button>
          </el-tab-pane>

        </el-tabs>
      </el-form>

    </el-card>

    <el-dialog
      title="图片预览"
      :visible.sync="preViewVisible">
      <img :src="preViewPath" alt="被狗吃了吗???" class="preViewImg">
    </el-dialog>
  </div>
</template>

<script>
  import _ from 'lodash'

  export default {
    data () {
      return {
        activeIndex: 0,
        cateList: [],
        manyList: [], // 动态参数
        onlyList: [], // 动态属性
        cascderProps: {
          value: 'cat_id',
          label: 'cat_name',
          childred: 'childern',
          expandTrigger: 'hover',
          checkStrictly: false
        },
        selectedCateKeys: [],
        addForm: {
          goods_name: '',
          goods_price: 0,
          goods_weight: 0,
          goods_number: 0,
          goods_cat: [],
          pics: [],
          attrs: [],
          goods_introduce: ''
        },
        addFormRules: {
          goods_name: [
            {
              required: true,
              message: '请输入商品名称',
              trigger: 'blur'
            }
          ],
          goods_price: [
            {
              required: true,
              message: '请输入 商品价格',
              trigger: 'blur'
            }
          ],
          goods_weight: [
            {
              required: true,
              message: '请输入 商品重量',
              trigger: 'blur'
            }
          ],
          goods_number: [
            {
              required: true,
              message: '请输入 商品数量',
              trigger: 'blur'
            }
          ],
          goods_cat: [
            {
              required: true,
              message: '请选择 商品分类',
              trigger: 'blur'
            }
          ]
        },
        uploadActionUrl: '',
        headerObj: {
          Authorization: ''
        },
        preViewPath: '',
        preViewVisible: false
      }
    },
    created () {
      this.getCateList()
      this.uploadActionUrl = this.$http.defaults.baseURL + 'upload'
      this.headerObj.Authorization = window.localStorage.getItem('token')
    },
    methods: {
      // 获取商品分类
      async getCateList () {
        const { data: res } = await this.$http.get('categories')
        if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
        this.cateList = res.data
      },
      handleChange () {
        if (this.addForm.goods_cat.length !== 3) {
          this.addForm.goods_cat = []
        }
      },
      // 第一个参数是新标签  第二个是旧的
      beforetabLeave (activeName, oldActiveName) {
        if (oldActiveName === '0' && this.addForm.goods_cat.length !== 3) {
          this.$message.error('请选择商品分类')
          return false
        }
      },
      // tab 切换
      async tabClicked () {
        if (this.activeIndex === '1') {
          const { data: res } = await this.$http.get(`categories/${this.cateId}/attributes`, {
            params: {
              sel: 'many'
            }
          })
          if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
          res.data.forEach(item => {
            item.attr_vals = item.attr_vals ? item.attr_vals.split(',') : []
          })
          this.manyList = res.data
        }
        if (this.activeIndex === '2') {
          const { data: res } = await this.$http.get(`categories/${this.cateId}/attributes`, {
            params: {
              sel: 'only'
            }
          })
          if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
          this.onlyList = res.data
        }
      },
      // 处理图片预览
      handlePreview (file) {
        this.preViewPath = file.response.data.url
        this.preViewVisible = true
      },
      // 图片删除
      handleRemove (file) {
        console.log(file)
        console.log(this.addForm.pics)
        const filePath = file.response.data.tmp_path
        const i = this.addForm.pics.findIndex(x => x.pic === filePath)
        this.addForm.pics.splice(i, 1)
        console.log(this.addForm.pics)
      },
      // 上传成功
      handleSuccess (response) {
        console.log(response)
        const picInfo = {
          pic: response.data.tmp_path
        }
        this.addForm.pics.push(picInfo)
        this.$message.success('上传成功')
      },
      // 添加商品
      addShop () {
        console.log(this.addForm)
        this.$refs.addFormRef.validate(async valid => {
          if (!valid) return false
          //  先拷贝一下
          const form = _.cloneDeep(this.addForm) // 深拷贝
          form.goods_cat = form.goods_cat.join(',') // 处理分类

          // 处理动态参数
          this.manyList.forEach(item => {
            const newInfo = {
              attr_id: item.attr_id,
              attr_valus: item.attr_vals
            }
            this.addForm.attrs.push(newInfo)
          })

          // 处理静态参数
          this.onlyList.forEach(item => {
            const newInfo = {
              attr_id: item.attr_id,
              attr_valus: item.vals
            }
            this.addForm.attrs.push(newInfo)
          })
          form.attrs = this.addForm.attrs
          // 请求
          const { data: res } = await this.$http.post('goods', form)
          if (res.meta.status !== 201) return this.$message.error(res.meta.msg)
          this.$message.success(res.meta.msg)
          this.$refs.addFormRef.resetFields()
          this.$router.push('/goods')
        })
      }
    },
    computed: {
      cateId () {
        if (this.addForm.goods_cat.length === 3) {
          return this.addForm.goods_cat[2]
        }
        return null
      }
    }
  }
</script>

<style lang="less" scoped>
  .el-step__title {
    font-size: 13px;
  }

  .el-checkbox {
    margin: 0 5px 0 0 !important;
  }

  .preViewImg {
    width: 100%;
  }

  .shopbtn {
    margin-top: 10px;
  }
</style>
